#1673: CHttpRequest::getPreferredLanguage now works according to RFC2616. Added CHttpRequest::getPreferredLanguages that returns all user accepted languages in order of preference (Rupert-RR, bwoester, cebe, samdark)

#1676: Fixed listData() grouping when no group was specified (mdomba)

#1716: Fixed CCodeModel::pluralize() and CConsoleCommand::pluralize() so it doesn't force lowercase the first letter in any words (nsanden)

#1726: Fixed the error Undefined variable: json in CJSON.php when json_decode function did not exist (heyhoo)

#1792: Fixed persistent access permissions when two identities were used in a single application run. (jhenriquemc, François Gannaz)

#1853: CAssetManager::publish() method will throw an exception if $forceCopy and $linkAssets are both true (resurtm, mdomba)

Table schema is refreshed on Gii model generation when schemaCachingDuration is used (SonkoDmitry)